Repository navigation
Expand file tree
/
Copy pathtest_namebinding.py
More file actions
1144 lines (870 loc) · 21.9 KB
/
Copy pathtest_namebinding.py
File metadata and controls
1144 lines (870 loc) · 21.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#####################################################################################
#
# Copyright (c) Microsoft Corporation. All rights reserved.
#
# This source code is subject to terms and conditions of the Apache License, Version 2.0. A
# copy of the license can be found in the License.html file at the root of this distribution. If
# you cannot locate the Apache License, Version 2.0, please send an email to
# ironpy@microsoft.com. By using this source code in any fashion, you are agreeing to be bound
# by the terms of the Apache License, Version 2.0.
#
# You must not remove this notice, or any other, from this software.
#
#
#####################################################################################
from iptest.assert_util import *
if is_cli or is_silverlight:
from _collections import *
else:
from collections import *
def nolocals():
AreEqual(locals(), {})
def singleLocal():
a = True
AreEqual(locals(), {'a' : True})
def nolocalsWithArg(a):
AreEqual(locals(), {'a' : 5})
def singleLocalWithArg(b):
a = True
AreEqual(locals(), {'a' : True, 'b': 5})
def delSimple():
a = 5
Assert(locals() == {'a' : 5})
del(a)
Assert(locals() == {})
def iteratorFunc():
for i in range(1):
Assert(locals() == {'i' : 0})
yield i
def iteratorFuncLocals():
a = 3
for i in range(1):
Assert(locals() == {'a':3, 'i' : 0})
yield i
def iteratorFuncWithArg(b):
for i in range(1):
AreEqual(locals(), {'i' : 0, 'b':5})
yield i
def iteratorFuncLocalsWithArg(b):
a = 3
for i in range(1):
Assert(locals() == {'a':3, 'i' : 0, 'b':5})
yield i
def delIter():
a = 5
yield 2
Assert(locals() == {'a': 5})
del(a)
yield 3
Assert(locals() == {})
def execAdd():
exec('a=2')
Assert(locals() == {'a': 2})
def execAddExisting():
b = 5
exec('a=2')
Assert(locals() == {'a': 2, 'b':5})
def execAddExistingArgs(c):
b = 5
exec('a=2')
Assert(locals() == {'a': 2, 'b': 5, 'c':7})
def execDel():
a = 5
exec('del(a)')
#AreEqual(locals(), {})
def unassigned():
Assert(locals() == {})
a = 5
AreEqual(locals(), {'a': 5})
def reassignLocals():
locals = 2
Assert(locals == 2)
def unassignedIter():
yield 1
Assert(locals() == {})
yield 2
a = 5
yield 3
Assert(locals() == {'a': 5})
yield 4
def reassignLocalsIter():
yield 1
locals = 2
yield 2
Assert(locals == 2)
# we used to include _ which got defined during codegen. Make sure
# we don't crash
def localsAfterExpr():
exec "pass"
10
exec "pass"
def nested_locals():
# Test locals in nested functions
x = 5
def f():
a = 10
AreEqual(locals(),{'a':10})
f()
nested_locals()
def nested_locals2():
# Test locals in nested functions with locals also used in outer function
x = 5
def f():
a = 10
AreEqual(locals(),{'a':10})
AreEqual(sorted(locals().keys()), ['f','x'])
f()
nested_locals2()
# Test that namebinding uses name lookup when locals() is accessed inside a class
xyz = False
class C:
locals()["xyz"] = True
passed = xyz
Assert(C.passed == True)
nolocals()
singleLocal()
for a in iteratorFunc(): pass
for a in iteratorFuncLocals(): pass
nolocalsWithArg(5)
singleLocalWithArg(5)
def modifyingLocal(a):
AreEqual(a, 10)
a = 8
AreEqual(a, 8)
AreEqual(locals(), { 'a' : 8 })
modifyingLocal(10)
for a in iteratorFuncWithArg(5): pass
for a in iteratorFuncLocalsWithArg(5): pass
execAdd()
execAddExisting()
execAddExistingArgs(7)
execDel()
delSimple()
for a in delIter(): pass
unassigned()
for a in unassignedIter(): pass
reassignLocals()
for a in reassignLocalsIter(): pass
Assert(locals().has_key('__builtins__'))
a = 5
Assert(locals().has_key('a'))
exec('a = a+1')
Assert(locals()['a'] == 6)
def my_locals():
Fail("Calling wrong locals")
exec "pass"
locals = my_locals
exec "pass"
import __builtin__
save_locals = __builtin__.locals
try:
__builtin__.locals = my_locals
exec "pass"
finally:
__builtin__.locals = save_locals
localsAfterExpr()
del locals
# name binding in a function
def f():
a = 2
class c:
exec "a = 42"
abc = a
return c
AreEqual(f().abc, 2)
#def f():
# a = 2
# class c:
# locals()['a'] = 42
# abc = a
# return c
#
#AreEqual(f().abc, 2)
#
#def f():
# a = 2
# class c:
# exec "a = 43"
# locals()['a'] = 42
# abc = a
# return c
#
#AreEqual(f().abc, 43)
#def f():
# def x(): 42
# class C:
# print locals()
# print x
# return C
#
#AreEqual(f()().x, 42)
#def f():
# def x(): 42
# class C:
# print locals()
# print x
# return C
#
#Assert(not hasattr(f()(), 'x'))
######################################################################################
# TODO: weakref support in Silverlight
if not is_silverlight:
def nop():
pass
class gc:
pass
try:
import System
from System import GC
gc.collect = GC.Collect
gc.WaitForPendingFinalizers = GC.WaitForPendingFinalizers
except ImportError:
import gc
gc.collect = gc.collect
gc.WaitForPendingFinalizers = nop
def FullCollect():
gc.collect()
gc.WaitForPendingFinalizers()
def Hello():
global res
res = 'Hello finalizer'
#########################################
# class implements finalizer
class Foo:
def __del__(self):
global res
res = 'Foo finalizer'
#########################################
# class doesn't implement finalizer
class Bar:
pass
######################
# simple case
def SimpleTest():
global res
res = ''
f = Foo()
del(f)
FullCollect()
Assert(res == 'Foo finalizer')
######################
# Try to delete a builtin name. This should fail since "del" should not
# lookup the builtin namespace
def DoDelBuiltin():
global pow
del(pow)
def DelBuiltin():
# Check that "pow" is defined
global pow
p = pow
AssertError(NameError, DoDelBuiltin)
AssertError(NameError, DoDelBuiltin)
######################
# Try to delete a builtin name. This should fail since "del" should not
# lookup the builtin namespace
def DoDelGlobal():
global glb
del(glb)
return True
def DelUndefinedGlobal():
AssertError(NameError, DoDelGlobal)
AssertError(NameError, DoDelGlobal)
def DelDefinedGlobal():
# Check that "glb" is defined
global glb
l = glb
Assert(DoDelGlobal() == True)
AssertError(NameError, DoDelGlobal)
AssertError(NameError, DoDelGlobal)
######################
# Try to delete a name from an enclosing function. This should fail since "del" should not
# lookup the enclosing namespace
def EnclosingFunction():
val = 1
def DelEnclosingName():
del val
DelEnclosingName()
######################
# per-instance override
def PerInstOverride():
global res
res = ''
def testIt():
f = Foo()
f.__del__ = Hello
Assert(hasattr(Foo, '__del__'))
Assert(hasattr(f, '__del__'))
del(f)
testIt()
FullCollect()
Assert(res == 'Hello finalizer')
##################################
# per-instance override & remove
def PerInstOverrideAndRemove():
global res
def testit():
global res
global Hello
res = ''
f = Foo()
f.__del__ = Hello
Assert(hasattr(Foo, '__del__'))
Assert(hasattr(f, '__del__'))
del(f.__del__)
Assert(hasattr(Foo, '__del__'))
Assert(hasattr(f, '__del__'))
del(f)
testit()
FullCollect()
Assert(res == 'Foo finalizer')
##################################
# per-instance override & remove both
def PerInstOverrideAndRemoveBoth():
res = ''
f = Foo()
Assert(hasattr(Foo, '__del__'))
Assert(hasattr(f, '__del__'))
f.__del__ = Hello
Assert(hasattr(Foo, '__del__'))
Assert(hasattr(f, '__del__'))
FullCollect()
FullCollect()
del(Foo.__del__)
Assert(hasattr(Foo, '__del__') == False)
Assert(hasattr(f, '__del__'))
del(f.__del__)
dir(f)
Assert(hasattr(Foo, '__del__') == False)
Assert(hasattr(f, '__del__') == False)
FullCollect()
FullCollect()
del(f)
FullCollect()
Assert(res == '')
##################################
# define finalizer after instance creation
def NoFinAddToInstance():
global res
res = ''
def inner():
b = Bar()
Assert(hasattr(Bar, '__del__') == False)
Assert(hasattr(b, '__del__') == False)
b.__del__ = Hello
Assert(hasattr(Bar, '__del__') == False)
Assert(hasattr(b, '__del__'))
del(b)
inner()
FullCollect()
Assert(res == 'Hello finalizer')
##################################
# define & remove finalizer after instance creation
def NoFinAddToInstanceAndRemove():
global res
res = ''
b = Bar()
Assert(hasattr(Bar, '__del__') == False)
Assert(hasattr(b, '__del__') == False)
b.__del__ = Hello
Assert(hasattr(Bar, '__del__') == False)
Assert(hasattr(b, '__del__'))
del(b.__del__)
Assert(hasattr(Bar, '__del__') == False)
Assert(hasattr(b, '__del__') == False)
del(b)
FullCollect()
Assert(res == '')
SimpleTest()
DelBuiltin()
Assert(UnboundLocalError, EnclosingFunction)
DelUndefinedGlobal()
glb = 100
DelDefinedGlobal()
PerInstOverride()
PerInstOverrideAndRemove()
PerInstOverrideAndRemoveBoth()
NoFinAddToInstance()
NoFinAddToInstanceAndRemove()
#####################################################################################
from iptest.assert_util import *
# Some utilities
def get_true():
return True
def get_false():
return False
def get_n(n):
return n
def test_undefined(function, *args):
try:
function(*args)
except NameError, n:
Assert("'undefined'" in str(n), "%s: expected undefined variable exception, but different NameError caught: %s" % (function.func_name, n))
else:
Fail("%s: expected undefined variable exception, but no exception caught" % function.func_name)
def test_unassigned(function, *args):
try:
function(*args)
except UnboundLocalError, n:
pass
else:
Fail("%s: expected unassigned variable exception, but no exception caught" % function.func_name)
def test_attribute_error(function, *args):
try:
function(*args)
except AttributeError:
pass
else:
Fail("%s: expected AttributeError, but no exception caught" % function.func_name)
# straightforward undefined local
def test_simple_1():
x = undefined
undefined = 1 # create local binding
test_undefined(test_simple_1)
# longer assignment statement
def test_simple_2():
x = y = z = undefined
undefined = 1 # create local binding
test_undefined(test_simple_1)
# aug assignment
def test_simple_3():
undefined += 1 # binds already
test_undefined(test_simple_3)
# assigned to self
def test_simple_4():
undefined = undefined
test_undefined(test_simple_4)
# explicit deletion
def test_simple_5():
del undefined
test_undefined(test_simple_5)
# if statement
def test_if_1():
if get_false():
undefined = 1 # unreachable
x = undefined
test_undefined(test_if_1)
# if statement
def test_if_2():
if get_false():
undefined = 1
else:
x = 1
x = undefined
test_undefined(test_if_2)
# if statement
def test_if_3():
if get_true():
pass
else:
undefined = 1
x = undefined
test_undefined(test_if_3)
# nested if statements
def test_if_4():
if get_false():
if get_true():
undefined = 1
else:
undefined = 1
x = undefined
test_undefined(test_if_4)
# if elif elif elif
def test_if_5():
n = get_n(10)
if n == 1:
undefined = n
elif n == 2:
undefined = n
elif n == 3:
undefined = n
elif n == 4:
undefined = n
elif n == 5:
undefined = n
else:
pass
n = undefined
test_undefined(test_if_5)
# for
def test_for_1():
for i in range(get_n(0)):
undefined = i
x = undefined
test_undefined(test_for_1)
# more for with else that doesn't always bind
def test_for_2():
for i in range(get_n(0)):
undefined = i
else:
if get_false():
undefined = 1
elif get_false():
undefined = 1
else:
pass
x = undefined
test_undefined(test_for_2)
# for with break
def test_for_3():
for i in range(get_n(10)):
break
undefined = 10
x = undefined
test_undefined(test_for_3)
# for with break and else
def test_for_4():
for i in range(get_n(10)):
break
undefined = 10
else:
undefined = 20
x = undefined
test_undefined(test_for_4)
# for with break and else
def test_for_5():
for i in range(get_n(10)):
if get_true():
break
undefined = 10
else:
undefined = 20
x = undefined
test_undefined(test_for_5)
# for with break and else and conditional initialization
def test_for_6():
for i in range(get_n(10)):
if get_false():
undefined = 10
if get_true():
break
undefined = 10
else:
undefined = 20
x = undefined
test_undefined(test_for_6)
# delete somewhere deep
def test_for_7():
for i in range(get_n(10)):
undefined = 10
if get_false():
del undefined
if get_true():
del undefined;
if get_true():
break
undefined = 10
else:
undefined = 20
x = undefined
test_undefined(test_for_7)
# bound by for
def test_for_7():
for undefined in []:
pass
print undefined
test_undefined(test_for_7)
# more binding constructs
def test_try_1():
try:
1/0
undefined = 1
except:
pass
x = undefined
test_undefined(test_try_1)
def test_try_2():
try:
pass
except Error, undefined:
pass
x = undefined
test_undefined(test_try_2)
# bound by import statement
def test_import_1():
x = undefined
import undefined
test_undefined(test_import_1)
# same here
def test_import_2():
x = undefined
import defined as undefined
test_undefined(test_import_2)
# del
def test_del_1():
undefined = 1
del undefined
x = undefined
test_undefined(test_del_1)
# conditional del
def test_del_2():
undefined = 10
if get_true():
del undefined
else:
undefined = 1
x = undefined
test_undefined(test_del_2)
# del in the loop
def test_del_3():
undefined = 10
for i in [1]:
if i == get_n(1):
del undefined
x = undefined
test_undefined(test_del_3)
# del in the loop in condition
def test_del_4():
undefined = 10
for i in [1,2,3]:
if i == get_n(1):
continue
elif i == get_n(2):
del undefined
else:
break
x = undefined
test_undefined(test_del_4)
def test_params_1(undefined):
AreEqual(undefined, 1)
del undefined
x = undefined
test_undefined(test_params_1, 1)
def test_params_2(undefined):
AreEqual(undefined, 1)
x = undefined
AreEqual(x, 1)
del undefined
y = x
AreEqual(y, 1)
x = undefined
test_undefined(test_params_2, 1)
def test_params_3(a):
if get_false(): return
x = a
undefined = a
del undefined
x = undefined
test_undefined(test_params_3, 1)
def test_default_params():
if get_false():
x = 1
def f(a = x):
locals()
test_unassigned(test_default_params)
def test_class_bases():
if get_false():
x = dict
class C(x):
locals()
test_unassigned(test_class_bases)
def test_conditional_member_def():
class C(object):
if get_false():
x = 1
C().x
test_attribute_error(test_conditional_member_def)
def test_member_access_on_undefined():
undefined.member = 1
locals()
test_undefined(test_member_access_on_undefined)
def test_item_access_on_undefined():
undefined[1] = 1
locals()
test_undefined(test_item_access_on_undefined)
def test_item_access_on_undefined_in_tuple():
(undefined[1],x) = 1,2
locals()
test_undefined(test_item_access_on_undefined_in_tuple)
def test_item_access_on_undefined_in_list():
[undefined[1],x] = 1,2
locals()
test_undefined(test_item_access_on_undefined_in_list)
def test_item_index_undefined():
dict()[undefined] = 1
locals()
test_undefined(test_item_index_undefined)
def test_nested_scope_variable_access():
def g():
def f():
x = undefined
return f
g()()
undefined = 1
test_undefined(test_nested_scope_variable_access)
#####################################################################################
from iptest.assert_util import *
result = "Failed"
a = 2
b = a
del a
try:
b = a
except NameError:
result = "Success"
Assert(result == "Success")
class C:
pass
c = C()
c.a = 10
Assert("a" in dir(c))
del c.a
Assert(not "a" in dir(c))
C.a = 10
Assert("a" in dir(C))
del C.a
Assert(not "a" in dir(C))
for m in dir([]):
c = callable(m)
a = getattr([], m)
success = False
try:
del this_name_is_undefined
except NameError:
success = True
Assert(success)
# verify __builtin__ is accessed if a global isn't defined
xyz = 'aaa'
AreEqual(xyz, 'aaa')
import __builtin__
__builtin__.xyz = 'abc'
xyz = 'def'
AreEqual(xyz, 'def')
del xyz
AreEqual(xyz, 'abc')
del __builtin__.xyz
try:
a = xyz
except NameError: pass
## delete builtin func
import __builtin__
try:
del pow
AssertUnreachable("should have thrown")
except NameError: pass
class C(object):
name = None
def test(self):
print name
AssertError(NameError, C().test)
try:
del __builtin__.pow
AssertError(NameError, lambda: pow)
AssertError(AttributeError, lambda: __builtin__.pow)
finally:
reload(__builtin__)
# make sure we still have access to __builtin__'s after reloading
# AreEqual(pow(2,2), 4) # bug 359890
dir('abc')
## Overriding __builtin__ method inconsistent with -X:LightweightScopes flag
import __builtin__
__builtin__.help = 10
AssertErrorWithPartialMessage(TypeError, "is not callable", lambda: help(dir))
# Test that run time name lookup skips over class scopes
# (because class variables aren't implicitly accessible inside member functions)
a = 123
class C(object):
a = 456